注意：此页面搜索的是所有试题
题目内容
（广东开放大学 英语语法与基础写作）
He didn.t come to the meeting yesterday. That is _______ he didn.t know our decision.
选择一项：
A. why
B. for
C. because
D. as
选择一项：
A. why
B. for
C. because
D. as
参考答案